Home / 13,102.99-18,081.87-7,134.77

Finding the Fourth Proportional to 13,102.99, 18,081.87 and 7,134.77

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Solution

The fourth proportional to 13,102.99, 18,081.87 and 7,134.77 is: 9,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.99 : 18,081.87 = 7,134.77 : x
  2. Step 2: Convert to fraction form
    13,102.99/18,081.87 = 7,134.77/x
  3. Step 3: Cross multiply
    13,102.99x = 18,081.87 × 7,134.77
  4. Step 4: Simplify right side
    13,102.99x = 129,009,983.62
  5. Step 5: Solve for x
    x = 129,009,983.62/13,102.99
  6. Step 6: Final answer
    x = 9,845.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.